| 摘要 |
PURPOSE:To suppress fluctuation of pressure within a condenser by giving fluctuation of flow rate of ultra-cold liquid gas as a feed forward signal to an adjusting-meter of a flow rate of heat medium vaporized gas which enters the condenser through direct bypass from a gas vaporizer for heat medium. CONSTITUTION:The captioned system has a gas vaporizer 1 in which liquid gas for heat medium, for example, LPG is vaporized by sea water, and a condenser 2 in which used heat medium vaporized gas coming out of a turbine TB1 is cooled and liquidized by ultra-cold liquid gas, for example, LNG. In this case, an adjusting-meter C1 which adjusts a turbine bypass valve V3 that introduces a part of the heat medium vaporized gas directly to the condenser 2 without introducing it to the turbine TB1 is provided. And by this adjusting-meter C1, the bypass valve V3 is controlled by a feed-forward signal obtained based on a detected pressure in the condenser 2 by a pressure detector 11, the most suitable set value by a function generator 12, and fluctuation of flow rate at an LNG entrance portion by an LNG flow rate detector 13. |
